Promax 18 He Plus System will not turn off,?
If i turn the unit on from the fuse switch i get heating on i cant use the timer as the heat wont turn off if i want hot water i have to have the heating on so all in all it runs 24/7. I have even taken the timer unit of the wall switched the power on and it still works so have changed the timer and that never worked so please help
tony, February 2014